There are total 18 hours or 1080 minutes from 7am to 1am. In words, this duration is equal to eighteen hours or one thousand eighty minutes.
How many hours from
| 10PM to 8AM | 12PM to 2PM | 4PM to 8AM |
| 6AM to 2AM | 1AM to 12PM | 10PM to 4PM |
| 5PM to 9AM | 6PM to 4AM | 4PM to 5AM |
| 5AM to 1PM | 8AM to 2AM | 5AM to 6AM |
| 12PM to 8PM | 12PM to 7PM | 3PM to 11AM |
| 9AM to 7AM | 6PM to 10AM | 12PM to 9PM |
